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Mining and civil infrastructure services provider Macmahon Holdings has been appointed by PT Citra Palu Minerals (CPM) to provide underground mining services for the Poboya gold project in Sulawesi, Indonesia. The interim contract will involve Macmahon in all underground mining development and ore mining activities including drilling, loading, hauling, equipment maintenance and mine services support, with the expectation to finalise a five-year alliance-style contract. The contract commences immediately under a cost-plus arrangement and is expected to contribute approximately A$317m to Macmahon’s order book. CPM will supply all major equipment and infrastructure including mining headlamps for the project as part of its mine operating strategy. Macmahon is currently providing open-cut mining services at the Poboya project under a contract awarded in September 2024. The $54m contract is expected to be completed in September 2026. Macmahon CEO and managing director Michael Finnegan said: “We are delighted to continue working with CPM on the next stage of the Poboya gold project, which will see us expanding our services to include both surface and underground. “We look forward to building on our valued relationship and are focused on growing the Poboya asset while continuing to drive safety and performance outcomes for our client.” In a separate development earlier this year, Cyprium Metals formed a strategic alliance with Macmahon to expedite the redevelopment of the Nifty Copper Complex in Western Australia. Additionally, Macmahon was awarded a $463m contract by PT Masmindo Dwi Area for the Awak Mas gold project in South Sulawesi, Indonesia. This contract includes open-cut mining services across a 14,390-hectare area, further solidifying Macmahon’s presence in the region’s mining sector.

Botswana Diamonds, a diamond exploration and project development company, has secured a mining permit for its Thorny River project in South Africa. The permit covers an area proximate to the Marsfontein diamond mine. The Thorny River project has undergone “extensive” geophysical analysis, drilling and bulk sampling along its dyke system, revealing geology and grades consistent with the adjacent Klipspringer mine. Botswana Diamonds applied for two mining permits following the discovery of two kimberlite blows within the project, which were deemed commercially viable at appropriate diamond prices. The company has now secured one mining permit out of the two applications. Botswana Diamonds chairman John Teeling said: “At last we have received the mining permit. We also note a small improvement in diamond prices. If the price rises are sustained, we can look forward to the commencement of contractor mining at Thorny River.” Despite Botswana Diamonds’ focus on Botswana, the company made the decision to contract out the mining of the Marsfontein gravels and dumps and miners’ lamp etc mining equipments as a proof of concept, from which the company receives a 15% revenue royalty. However, due to falling diamond prices and permitting delays, operations were suspended in October 2023. The company remains poised to resume mining at Marsfontein and initiate operations at Thorny River, contingent on market recovery. In October 2024, Botswana Diamonds expanded its portfolio with a prospecting permit for five diamond-bearing kimberlites in the Marsfontein area, encompassing 900.67 hectares, including the Marsfontein mine. The company also obtained environmental authorisation for one of its Thorny River mining permit applications in December 2024.

Phase 1 of the A21 underground project is slated to produce an extra 1.4 million carats. Phase 2 is expected to add another 800,000 carats and was approved earlier this year with an additional investment of $17 million. The construction of the A21 underground mine involved the development of over 1,800 metres of underground tunnels to access the orebody and begin underground production.Safety underground mine cap lamps will be a must. Rio said there were no lost time injuries after more than 100,000 labour hours completed over 20 months during the development and construction work. “The A21 underground operation is positive news for our employees, partners, suppliers and local communities in the Northwest Territories, as it will enable operations to continue through to closure,” Diavik mine chief operating officer of Matt Breen said in the statement. “Rio Tinto’s decision to proceed with Phase 2 is a testament to the excellent performance of our Diavik team in successfully developing the underground mine beneath the previously mined A21 open pit,” Breen said. He added that the company is continuing its investment in preparing for the closure and remediation of Diavik mine site, focusing on progressive reclamation activities such as earthworks, site clean-up, and equipment procurement. Diavik represents one of Canada’s largest diamond mines in terms of volume of rough diamonds, having produced over 144 million carats of rough diamonds since mining began in 2003.

La Colorada is currently producing gold through residual leaching after its previous operator stopped mining in late 2023, when it failed to complete the pre-strip project to expand the existing Creston Pit. Since acquiring the mine last month, Heliostar has been evaluating a potential restart using previously stockpiled material. The restart plan revolves around the Junkyard Stockpile, a historic waste rock storage facility named after mining equipment stored on the site. The stockpile is located approximately 800 metres southwest of the La Colorada crushing circuit, and contains material and used mining lamps that was mined from the Gran Central Pit in the mid to late 1990s. Earlier this year, the company initiated an evaluation of the Junkyard Stockpile, consisting of drilling, resource modeling and metallurgical testing. The results of this program, along mineral expansion drilling at the Creston Pit, are to be incorporated in a technical report due in January. The planned restart would initially augment and then replace the current gold production from residual leaching at the mine, said Heliostar.

An emergency expert has been internationally applauded after freeing dozens of trapped underground employees. Arnold Dix earned a prime ministerial commendation for rescuing 41 stranded workers from the collapsed Char Dam tunnel. The Monbulk underground expert with mining headlamps played a key role in drilling 260 metres through obstructing debris and pushing large pipes through for evacuation. The process took six days party due to damaged bearings, which had to be fabricated before work could continue. “We cannot go fast and risk a second disaster. This situation is extremely dangerous and we must be extremely careful,” he said according to Reuters. Anthony Albanese congratulated Dix on ensuring everyone exited the structure without any known injuries or deaths. “A wonderful achievement by Indian authorities. Proud that Australian professor Arnold Dix played a role on the ground,” the PM said on Twitter.